Make maps in monomorphic IC stubs weak.

src/mark-compact.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 620 matching lines @@
 
   enum SweepingParallelism {
     SWEEP_SEQUENTIALLY,
     SWEEP_IN_PARALLEL
   };
 
 #ifdef VERIFY_HEAP
   void VerifyMarkbitsAreClean();
   static void VerifyMarkbitsAreClean(PagedSpace* space);
   static void VerifyMarkbitsAreClean(NewSpace* space);
-  void VerifyWeakEmbeddedObjectsInOptimizedCode();
+  void VerifyWeakEmbeddedObjectsInCode();
   void VerifyOmittedMapChecks();
 #endif
 
   // Sweep a single page from the given space conservatively.
   // Return a number of reclaimed bytes.
   template<SweepingParallelism type>
   static intptr_t SweepConservatively(PagedSpace* space,
                                       FreeList* free_list,
                                       Page* p);
 
@@ skipping 383 matching lines @@
  private:
   MarkCompactCollector* collector_;
 };
 
 
 const char* AllocationSpaceName(AllocationSpace space);
 
 } }  // namespace v8::internal
 
 #endif  // V8_MARK_COMPACT_H_